Incoming junction scanning arrangement in automatic telephone exchange system



1967 H. J. STIRLING ETAL 3,

INCOMING JUNCTION SCANNING ARRANGEMENT IN AUTOMATIC TELEPHONE EXCHANGE SYSTEM Filed March 26, 1964 20 Sheets-Sheet 1 1967 H. J. STIRLING ETAL 3,349,138

INCOMING JUNCTION SCANNING ARRANGEMENT IN AUTOMATIC TELEPHONE EXCHANGE SYSTEM Filed March 26, 1964 20 Sheets-Sheet ,2

( W2 5613 45 S666 5M7 HQZGU) T Filed March 26, 1964 Oct. 24,1967 H.

J. STIRLING ETAL 3,349,188 INCOMING JUNCTION SCANNING ARRANGEMENT IN AUTOMATIC v TELEPHONE EXCHANGE SYSTEM 20 Sheets-Sheet 5 06L 1967 H. J. STIRLING ETAL 3, 8

INCOMING JUNCTION SCANNING ARRANGEMENT IN AUTOMATIC TELEPHONE EXCHANGE SYSTEM I Filed March 26, 1964 20 Sheets-Sheet 4 I I I I Oct. 24, 196 H. J. STIRLING ETAL 3,349,188

INCOMING JUNCTION SCANNING ARRANGEMENT IN-AUTOMATIC TELEPHONE EXCHANGE SYSTEM Filed March 26, 1964 20 Sheets-Sheet 5 M320 2351 Jaw I p I my h. Maxi E1191 I I Oct. 24, 1967 H. J STIRLING ETAL 7 3,349,188

INCOMING JUNCTION SCANNING ARRANGEMENT IN AUTQMATIC TELEPHONE EXCHANGE SYSTEM Filed March 26, 1964 2O Sheets-Sheet 6 MON3 Nvea [2 E 3am H. J. STIRLING ETAL SCANNING ARRANGEMENT I N AUTOMATIC Oct. 24, 1967 INCOMING JUNCTION TELEPHONE EXCHANGE SYSTEM 20 Sheets-Sheet 7 Filed March 26, 1964 Oct. 24, 1967 H. J. STIRLING ETAL 3,349,188

INCOMING JUNCTION SCANNING ARRANGEMENT IN AUTOMATIC TELEPHONE EXCHANGE SYSTEM Filed March 26, 1964 20 Sheets-Sheet 8 SCI 5 sci 2 4 4 GNZL 01x22 4 Q25 NVlb NVLE) Oct. 24, 1967 H. J. STIRLING ETAL 3,349,138

INCOMING JUNCTION SCANNING ARRANGEMENT IN AUTOMATIC TELEPHONE EXCHANGE SYSTEM Filed March 216, 1964 20 Sheets-Sheet 9 W23 M9 M22 422 AC NV24 A B] k B 359 B510 Anzo Ama Am Oct. 24, 1967 $T|RL|NG ETAL 3,349,188

INCOMING JUNCTION SCANNING ARRANGEMENT IN AUTOMATIC TELEPHONE EXCHANGE SYSTEM Filed March 26, 1964 A 20 Sheets-Sheet 10 a T0 DCII H sELnoN I I I l l I I I I I I l I I I I 061 I I I l I I I I I I I l TO DL. SELTION OF RE LISTER Nvdok d/CZ 1967 H. J. STQIRLING ETAL 3,349,188

INCOMING JUNCTION SCANNING ARRANGEMENT IN AUTOMATIC TELEPHONE EXCHANGE SYSTEM Filed March 26, 1964 20 Sheets-Sheet ll 14/ M2 (Hm!) Oct. 24, 1967 STIRUNG ETAL 3,349,188

INCOMING JUNCTION SCANNING ARRANGEMENT IN AUTOMATIC TELEPHONE EXCHANGE SYSTEM Filed March 26, 1964 2O Sheets-Sheet 12 1967 H J. STIRLING ETAL 3,349,188

INCOMING JUNCTION SCANNING ARRANGEMENT IN AUTOMATIC TELEPHONE EXCHANGE SYSTEM Filed March 26, 1964 20 Sheets-Sheet l5 F5-4C(R) Oct. 24, 1967 H. J. STIRLING ETAL 3,349,188

INCOMING JUNCTION SCANNING ARRANGEMENT IN AUTOMATIC TELEPHONE EXCHANGE SYSTEM Filed March 26, 1964 20 Shets-Sheet 14 Oc 2 1967 H. J. STIRLING ETAL 3,

INCOMING JUNCTION SCANNING ARRANGEMENT IN AUTOMATIC TELEPHONE EXCHANGE SYSTEM Filed March 26, 1964 20 Sheets-Sheet 15 00L 1967 H. J. STIRLING ETAL 3,349,188

INCOMING JUNCTION SCANNING ARRANGEMENT IN AUTOMATIC TELEPHONE EXCHANGE SYSTEM Filed March 26, 1964 20 Sheets-Sheet 16 (A59 NVA6; v i 3 I GkzO oms W58 ra ls m5 l I I ALARM 8525 CIRCUIT B A l l I I NVAll 1 E; NVAb W Oct. 24, 1967 H. J. STIRLING ETAL 3,349,138

INCOMING JUNCTION SCANNING ARRANGEMENT IN AUTOMATIC TELEPHONE EXCHANGE SYSTEM 1967 H. J. STIRLING ETAL 8 INCOMING JUNCTION SCANNING ARRANGEMENT IN AUTOMATIC TELEPHONE EXCHANGE SYSTEM Filed March 26, 1964 20 Sheets-Sheet 18 GENERAL DESIGNATION PULSE BIAS INPUT (0) PULSE OUTPUT IN PUTS OUTPUT ENIITER GATING LEAD OUTPUTS PUL Pwfi /L; PULSE PLUS BIABGAIE BIAS GATE 5 A 5 EMS BIAS INPUT INPUT l\p /l PULSIINPUT B|AS|NPUT- A T (NON) IOUTPUT lNPUT (NV) OUTPUT INPUT E OUTPUT (AM) INPUT QLAMPINGINPUI (AM) I NOUTPUT IINIIIBITING INPUT (MVX) ATING INPUT (NV) OUTPUT F ZILI 1967 H. J. STIRLING ETAL 3,349,138

INCOMING JUNCTION SCANNING ARRANGEMENT IN AUTOMATIC TELEPHONE EXCHANGE SYSTEM Filed March 26, 1964 20 Sheets-Sheet 19 DESCRIPTION TRANsIsToR PULSE-PLUS-BIAS GATE (NUMERAL INDICATES NUMBER OF INPUTS) TRANSISTOR ANd'cATE (NuMTIzII INDICATES NUMBER or INPUTS) IRANSISTORbR 'G/ITE TRANSI5TORANDIIGATE \JITH EMITTER GATING (NUMERAL INDICATES NUMBER or INPUTS IN THEBASE CIRCUIT) TRANSISTOR BISTABIE CIRCUIT WITH ASSOCIATED PULSE PLUb-BIAS GATES TRANSISTOR NUNOSTABLE CIRCUIT \JITH ASSOCIATED PULSE PLUS-BIAS GATT.

QUASISTABLE PERIOD INDICATED IN RIGHT HAND RECTANGLE INVERTER AMPLIFIER AMPLIFIER II/ITH CLAMPING INPUT TRANSISTOR OSCILLATOR WITH AND WITHOUT.

INHIBITING INPUT (\JAVE FORM OF OUTPUT INDICATED WITHIN RECTANGLE) REZIRT Oct 2 1 H. J. STIRLING ETAL 3, 8

INCOMING JUNCTION SCANNING ARRANGEMENT IN AUTOMATIC TELEPHONE EXCHANGE SYSTEM Filed March 26, 1964 20 Sheets-Sheet 20 GA80 L y 

1. IN AN AUTOMATIC TELEPHONE EXCHANGE SYSTEM COMPRISING INCOMING JUNCTION CIRCUITS, INCOMING JUNCTIONS, TERMINATED ON SAID INCOMING JUNCTION CIRCUITS, REGISTERS, AND DIAL PATH MEANS OVER WHICH THE REGISTERS CAN BE CONNECTED SELECTIVELY TO INCOMING JUNCTION CIRCUITS, A SCANNING ARRANGEMENT FOR SCANNING SAID INCOMING JUNCTIONS COMPRISING ELECTRONIC SCANNING MEANS OPERABLE DURING ONE PART OF EACH SCAN PERIOD FOR SCANNING A DIFFERENT ONE OF SAID INCOMING JUNCTIONS AND RESPONSIVE ON DETECTING A CALLING CONDITION ON SAID JUNCTION TO CAUSE THE SEIZURE AND COUPLING UP OF A FREE REGISTER TO SUCH CALLING INCOMING JUNCTION, SAID ELECTRONIC SCANNING MEANS BEING OPERABLE DURING ANOTHER PART OF SAID SCAN PERIOD FOR SCANNING A GROUP OF SAID INCOMING JUNCTIONS AND RESPONSIVE ON DETECTING DIAL IMPULSES ON ANY CALLING INCOMING JUNCTION SAID GROUP, IN RESPECT OF WHICH CALLING INCOMING JUNCTION A REGISTER HAS ALREADY BEEN TAKEN INTO USE, TO CAUSE SUCH LATTER CALLING INCOMING JUNCTION TO BE CONNECTED OVER SAID DIAL PATH MEANS TO THE APPERTAINING REGISTER. 